January 22, 1941

February 25, 1941

March 1, 1941

March 11, 1941

The U.S. Congress passes the Lend-Lease Act giving Roosevelt the authority to sell, transfer, or lease war goods to the government of any Allied country, thereby effectively ending American neutrality.

March 25, 1941

Yugoslavia signs the Tripartite Pact, briefly becoming part of the Axis, but the pro-German government is toppled two days later.